Cinder-sifter



P. C. AND j. S. FOHREST.

CINDEB SIFTER. APPLICATION FILED-MAR. 18, i920.

1,364,926, Patented Jan. 11, 1921.

2 SHEETS-SHEET 2.

/A/f/V 7'0/5t 26 Pfff/e c. foe/e552 JA/w 5. FQRRfZ 5y fil/M UNITED STATES PETER CARMICHAEL FORREST AND JAMES SAMUEL FORREST, OF TORONTO, ONTARIO,

PATENT OFFICE.

CANADA.

CINDER-SIFTER.

Specification of Letters Patent. f

Patented Jan. 11, 1921.

Application led March 18, 1920. y Serial No. 366,829.

To allwlzomz'tmay concern: Be 1t known that we, PETER CARMICHAEL Foimns'r, painter, and JAMES SAMUEL Fon- Rnsr, motorman, both subjects of theyKing l of Great Britain,`residing at Toronto, inthev county of York, Province of Ontario,Canv ada, have invented certain newj and usefuly `Improvements inl fCinder-Sifters, of which the followingis they specification;

f Our invention relates to improvements-,in cinder sifters and the object of -thefinven-4 tion is to devise a means forjautornati'cally separating thecinders from the` ash simultaneously with f the i operation of shaking: the

furnace grates, and it consists essentially-in thearrangement and construction 'of parts as hereinafter more particularly explained.-

position.

In the drawings like characters o f reference indicate corresponding parts 1n each figure. l

i 1 indicates an ash pit of a furnace which*l is provided with the usual draft opening2 and draft door 3 which is controlledby the chain4 in the usual mannen 5 are thegrate bars of the furnace, the center bars being provided with the usual socketed trunnionv 'ends 6 into which the inner end of the ash y lpit lever 7 extends in order to shake the 4()` grates1`8and -91are U-bars whichy are supported in suspended position `across the ash pit 1. The sidev arms 10 and 11 extend upward in proximity to the side walls ofthe furnace ash pit and are provided with clamping bolts 12 -and-13 whichlpass through the arms'10 and 11 and bear against the'side walls of the' ash pit and whenftightenedy in position firmly hold the U-bars 8 and 9 suspended. 14 and 15 are directing plates which are carried by or formed integral with the side arms 10 and 11 of the U-bars 8 and 9. The lower edges of the directing plates 14 and 15 are fingered as indicated at 16. 17 is an H-frame which comprises twoside angle bars 18 and 19 which slidably restl upon the horizontal portions of the U-bars 8 and 9; The side bars 18 and 19'are` connectedtog'etherby a cross ybarv 20, the cross v,bar 20tbcing rigidly' secured tothe side bars 418 and 19- so as to form the Hframe. 21 is a` lever pivoted 'at vits inner' end i to the cross rbar 20 asindicated at 22,y and `intermediately of-its length tolthehorizontal portionof the U-bar S-as indicated at 23. 24 is za supplemental lever'provided at itsy l'inner end withn a socket`25 into which the outer end ofthe lever 21 tits. jItwvill `bernoted on referring particularly to Fig. 2 that the 'lever 2,1 Ais entirely 'within the ash pit and that when the supplemental lever 24 is fitted on theouter end ofthe lever 21', it yextends ythrough the'draft opening 2 ofthe ash pit when the draft door 3 is in the open position;v The'shaking lever 7 'is provided with a downward extension 25. 26 is a link which is preferably formed of a bartwisted inter- Inediately of `its length so that one end of the bar is at right angles to the other. Oneend ofthe link 26 is pivotally secured at 27 to the lower end of the downward extension 25 of thel lever 7 and the opposite end of the link is'provided with a dependingpin 28 which extends through a perforation 29 l formed in the end ofthe supplemental lever 24. 30 is a basket which is formed of Woven wire mesh so as to form asifter yfor the ashes. The inner end ofthe basket is. formed with an Iopen end which bearsagainst the back wall yofthe ash pit. VWhen in position the f basket fits betweenthe opposing angle bars 18 and 19 so that the basket moves with ythe -H-frarne when operated. The basket is also provided with a casting 31 suitably secured thereto, having a socket projection 32 adapted to' receive the inwardly projecting portion of the shaking lever 7 when removed from the socketed trunnions 6 kaccording to the -usual practice. The lower draft door 3 shaking of the lever 7 causes the asbestoA fall into the basket 30 which at the same time is rapidly reciprocated back and forth crosswise of the ash pit by reason of the action of the shaking lever 7 through the depending portion 25, link 26, supplemental lever 24 and lever 2l, thereby reciprocating the H-frame upon the horizontal portions of the U-bars 8 and 9 and shaking the basket and causing the iine ash to drop into the ash pit and retaining the cinders therein. As soon as the shaking operation is completed the lever 7 may be removed together with the supplemental lever24, the supplemental lever 24 and lever 7 being then separated by withdrawing the pin 28, the inwardly projecting portion of the lever 7 may be then inserted in the socket 32 after the ash pit door has been opened and the basket 30 removed, the cinders being then'dum ed yfrom the basket into the ire pit of the urnace on to the hre bed,"this operation being readily performed by reason of the inner end of the basket being left open.

From this description it will be seen that we have devised a very simple device whereby the ashes, as they are shaken from the furnace may be simultaneously sifted and the cinders separated therefrom removed and replaced in the re. If'it is found necessary to shake the cinders in the basket more than is done by the above operation the shaking `lever 7 may be removed and separated from the supplemental lever 24, the supplemental lever 24 being left in engagement with the lever 21. The lever 24 may then be operated by hand to perform this extra shaking. It has, however, been found in practice that the sifting operation performed when shaking the ygrates is sufficient to separate the cinders from the ash. i

What we claim as our invention is:

l. In a furnace, the combination with the ash pit, grate bars and shaking levers, of a supporting structure located beneath the grate bars, a shaking basket slidably supported upon the supporting structure, and a ilever mounted intermediately of its length upon the supporting structure and `connected at its inner end with the shaking basket,l an arm depending from the `shaking "lever, a supplemental lever engaging ythe lever of the shaking basket and extending through the draft opening of the ash pit,

and means for `engaging the `depending por-` tion of the shaking lever and the supple-y mental lever whereby the supplemental lever is-reciprocated by the operation of the shaking lever.

2. In a furnace, the combination with the `ash pit, grate bars and shaking levers, of

a supporting structure located beneath the grate bars, a shaking basket slidably supported upon'the supporting structure, a'

lever mounted intermediately of its length upon thesupporting structure and connected at its inner end with the shaking basket, an arm depending from the shaking lever, a supplemental lever engaging the lever of the shaking basket and extending through the draft opening of the ash pit, and a link pivotally connected at one end to the depending portion of the shaking lever and engaging the supplemental lever with l,the opposite end.

3; In a furnace, the combination with the ash pit, grate bars and shaking levers, of a supporting structure located beneath the grate bars, a shaking basket slidably supported upon the supporting structure, a supplemental lever pivotally mounted intermediately of its length upon the supporting structure and pivotally connected with the shakingbasket at its opposite end, a

supplemental lever engaging the outer Aendof the shaking basket lever and lextending through the draft door of the furnace, and having a perforation' at' its outer end, an arm depending from the grate bar shaking lever, a link pivotally connected to the lower end of such arm, a pin depending from the opposite end of the link and adapted to extend through the perforation of the supplemental lever.

4. In a furnace, a supporting structure adapted to fit within the ash pit and provided with cross bar portions, a frame comprising opposing angle bars connected together, a shaking basket fitted between the opposingangle bars, a lever pivoted at one end upon one of the cross bars of the supporting structure and pivotally connected at its opposite end to the frame holding `the shaking basket, and means extendlng through the draft door for operating the lever. i

5. In a furnace, a supporting structure adapted to fit within the ash pit and `provided with cross bars, an H-frame compris ing opposing angle bars slidably resting upon the cross bars,land a cross bar connecting the angle bars together intermediately of their length, a vlever pivotally supported upon one of the cross bars of the supporting structure 4and at the opposite Vend Ito the cross bar ofthe H-frame, and meansrextending throughthe ash pit ydoor of fthefurnace for `operatingdhe lever. 1

'6L vIn a furnace, a supporting structure comprising a pair of Ubars extending 'between the side walls'of the vash pit `of the furnace with the arms of the bars disposed vertically, means for clamping the vertical 'arms to the side walls of the ash pit, an

H-frame slidably supported by the U-bars, alshaking basket held within the H-frame, and means extending through the draft door of the furnace for reciprocating the shaking basket.

7. In a furnace, the combination withthe .ash `pit-Jamil,grate bars, of a removable supporting structure suspended beneath the having a socket at one end receiving the 10 grate clear of the bottom of the ash pit, a outer end of said first lever. sifting basket mounted on thJ supporting 8. The combination with the construction frame and free to reciprocate laterally thererecited in claim 7 of a grate shaking lever 5 on, a lever for reciprocating said basket, provided with an extension, and means for pivoted at its inner end to an intermediate releasably coupling the supplementary actu- 15 portion of said basket and intermediate its ating lever to said extension. ends to the forward portion of said frame, a A PETER CARMICHAEL FORREST- supplementary actuating lever for the basket JAMES SAMUEL FORREST. 

